AUTHOR=Caliskan Aylin , Zulqarnain Rana Muhammad , Güdekli Ertan , Siddique Imran , Ahmad Hijaz , Askar Sameh 

TITLE=Structural properties of a new class of stellar structures in modified teleparallel gravity

JOURNAL=Frontiers in Astronomy and Space Sciences

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2023.1203777

DOI=10.3389/fspas.2023.1203777

ISSN=2296-987X

ABSTRACT=<p>This paper explores new neutron star models based on spherically symmetric space–time. We take into account the gravitational effects of <inline-formula id="inf1"><mml:math id="m1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>f</mml:mi><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mrow><mml:mi>T</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="script">T</mml:mi></mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math></inline-formula> gravity, in which <italic>T</italic> is the torsion and <inline-formula id="inf2"><mml:math id="m2" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="script">T</mml:mi></mml:math></inline-formula> is the trace of the energy–momentum tensor. Field equations are evaluated by incorporating the off-diagonal tetrad. In this paper, we discuss the detailed properties of compact star candidates 4<italic>U</italic>1538–52, <italic>J</italic>0437–4,715, <italic>J</italic>0030 + 0451, and 4<italic>U</italic>1820–30, like energy density, pressure profiles, gradients, anisotropy, energy conditions, equation of state, speeds of sound, TOV equation, and compactification parameters. We discuss all these characteristics using the quadratic cosmological model of <inline-formula id="inf3"><mml:math id="m3" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>f</mml:mi><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mrow><mml:mi>T</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="script">T</mml:mi></mml:mrow><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math></inline-formula> gravity. We use the well-famed junction equations to evaluate the unknown parameters. Our detailed and comprehensive graphical analysis ensures that the model containing the anisotropic nature of stellar structures is physically acceptable, regular, and stable.</p>